.plate-ul .plate-ul-li:nth-child(7) a{
    color: var(--themecolor);
}
.header{
    background-color: #fff;
}
.cooperate1{
    width:1170px;
    min-width: 1170px;
    margin: 0 auto;
   padding: 100px 0;
}
.cooperate-ul-li1{
    width: calc((100% - 40px * 4) / 4);
    float: left;
    margin-right: 40px;
    margin-bottom: 40px;
}
.footer{
    background-color: #fff;
}